Autotech Engineering Deutschland Gmbh

Zidane Tahir

Raymond Aso

Tom Richford

The invention relates to a subframe () for a motor vehicle, comprising at least three beams, of which, in the assembled state of the subframe, at least two beams () extend at a distance from one another, substantially along the longitudinal axis of the motor vehicle and at least one beam () extends transversely to the longitudinal axis of the motor vehicle, at least one of the beams being an extruded beam (), and at least one cast node () of aluminium, magnesium or an alloy based on aluminium and/or magnesium, the cast node () connecting the extruded beam () and at least one of the other beams () to another, wherein the cast node () has an arm-shaped beam connecting element (), wherein the extruded beam () overlaps the beam connecting element (), and wherein the extruded beam () is connected to the beam connecting element () by a weld seam (). In order to improve such a subframe with regard to high strength and durability and low weight of the subframe, the invention provides that the cast node () has on the beam connecting element () a shoulder which defines a shoulder end face (), wherein the shoulder end face () on the one hand and the extruded support () and/or the weld seam () on the extruded beam () on the other hand define a groove-shaped or trench-shaped recess (), whose width or average width (W) is at least 2.5 times, preferably at least 3.5 times, particularly preferably at least 4 times, the wall thickness (te) of the extruded beam (), and wherein the weld seam () is designed as a lap seam.

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Durham, United Kingdom

Zidane Tahir